contacts: Don't save deleted contacts to disk.

chrome/browser/chromeos/contacts/contact_map.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_CONTACTS_CONTACT_MAP_H_
 #define CHROME_BROWSER_CHROMEOS_CONTACTS_CONTACT_MAP_H_
 
 #include <map>
 #include <string>
 
@@ skipping 29 matching lines @@
 
   bool empty() const { return contacts_.empty(); }
   size_t size() const { return contacts_.size(); }
   const_iterator begin() const { return contacts_.begin(); }
   const_iterator end() const { return contacts_.end(); }
 
   // Returns the contact with ID |contact_id|.  NULL is returned if the contact
   // isn't present.
   const Contact* Find(const std::string& contact_id) const;
 
+  // Deletes the contact with ID |contact_id|.
+  void Erase(const std::string& contact_id);
+
   // Deletes all contacts.
   void Clear();
 
   // Merges |updated_contacts| into |contacts_|.
   void Merge(scoped_ptr<ScopedVector<Contact> > updated_contacts,
              DeletedContactPolicy policy);
 
-  // Returns the maximum |update_time| value stored within a contact in
-  // |contacts_|.
-  base::Time GetMaxUpdateTime() const;
-
  private:
   Map contacts_;
 
   // Deletes values in |contacts_|.
   STLValueDeleter<Map> contacts_deleter_;
 
   DISALLOW_COPY_AND_ASSIGN(ContactMap);
 };
 
 }  // namespace contacts
 
 #endif  // CHROME_BROWSER_CHROMEOS_CONTACTS_CONTACT_MAP_H_